1/*  linux/arch/arm/mach-pxa/xcep.c
  2 *
  3 *  Support for the Iskratel Electronics XCEP platform as used in
  4 *  the Libera instruments from Instrumentation Technologies.
  5 *
  6 *  Author:     Ales Bardorfer <ales@i-tech.si>
  7 *  Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
  8 *  Contributions by: Matej Kenda <matej.kenda@i-tech.si>
  9 *  Created:    June 2006
 10 *  Copyright:  (C) 2006-2009 Instrumentation Technologies
 11 *
 12 *  This program is free software; you can redistribute it and/or modify
 13 *  it under the terms of the GNU General Public License version 2 as
 14 *  published by the Free Software Foundation.
 15 */
 16
 17#include <linux/platform_device.h>
 18#include <linux/i2c.h>
 19#include <linux/i2c/pxa-i2c.h>
 20#include <linux/smc91x.h>
 21#include <linux/mtd/mtd.h>
 22#include <linux/mtd/partitions.h>
 23#include <linux/mtd/physmap.h>
 24
 25#include <asm/mach-types.h>
 26#include <asm/mach/arch.h>
 27#include <asm/mach/irq.h>
 28#include <asm/mach/map.h>
 29
 30#include <mach/hardware.h>
 31#include <mach/pxa25x.h>
 32#include <mach/smemc.h>
 33
 34#include "generic.h"
 35
 36#define XCEP_ETH_PHYS		(PXA_CS3_PHYS + 0x00000300)
 37#define XCEP_ETH_PHYS_END	(PXA_CS3_PHYS + 0x000fffff)
 38#define XCEP_ETH_ATTR		(PXA_CS3_PHYS + 0x02000000)
 39#define XCEP_ETH_ATTR_END	(PXA_CS3_PHYS + 0x020fffff)
 40#define XCEP_ETH_IRQ		IRQ_GPIO0
 41
 42/*  XCEP CPLD base */
 43#define XCEP_CPLD_BASE		0xf0000000
 44
 45
 46/* Flash partitions. */
 47
 48static struct mtd_partition xcep_partitions[] = {
 49	{
 50		.name =		"Bootloader",
 51		.size =		0x00040000,
 52		.offset =	0,
 53		.mask_flags =	MTD_WRITEABLE
 54	}, {
 55		.name =		"Bootloader ENV",
 56		.size =		0x00040000,
 57		.offset =	0x00040000,
 58		.mask_flags =	MTD_WRITEABLE
 59	}, {
 60		.name =		"Kernel",
 61		.size =		0x00100000,
 62		.offset =	0x00080000,
 63	}, {
 64		.name =		"Rescue fs",
 65		.size =		0x00280000,
 66		.offset =	0x00180000,
 67	}, {
 68		.name =		"Filesystem",
 69		.size =		MTDPART_SIZ_FULL,
 70		.offset =	0x00400000
 71	}
 72};
 73
 74static struct physmap_flash_data xcep_flash_data[] = {
 75	{
 76		.width		= 4,		/* bankwidth in bytes */
 77		.parts		= xcep_partitions,
 78		.nr_parts	= ARRAY_SIZE(xcep_partitions)
 79	}
 80};
 81
 82static struct resource flash_resource = {
 83	.start	= PXA_CS0_PHYS,
 84	.end	= PXA_CS0_PHYS + SZ_32M - 1,
 85	.flags	= IORESOURCE_MEM,
 86};
 87
 88static struct platform_device flash_device = {
 89	.name	= "physmap-flash",
 90	.id	= 0,
 91	.dev 	= {
 92		.platform_data = xcep_flash_data,
 93	},
 94	.resource = &flash_resource,
 95	.num_resources = 1,
 96};
 97
 98
 99
100/* SMC LAN91C111 network controller. */
101
102static struct resource smc91x_resources[] = {
103	[0] = {
104		.name	= "smc91x-regs",
105		.start	= XCEP_ETH_PHYS,
106		.end	= XCEP_ETH_PHYS_END,
107		.flags	= IORESOURCE_MEM,
108	},
109	[1] = {
110		.start	= XCEP_ETH_IRQ,
111		.end	= XCEP_ETH_IRQ,
112		.flags	= IORESOURCE_IRQ,
113	},
114	[2] = {
115		.name	= "smc91x-attrib",
116		.start	= XCEP_ETH_ATTR,
117		.end	= XCEP_ETH_ATTR_END,
118		.flags	= IORESOURCE_MEM,
119	},
120};
121
122static struct smc91x_platdata xcep_smc91x_info = {
123	.flags	= SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
124};
125
126static struct platform_device smc91x_device = {
127	.name		= "smc91x",
128	.id		= -1,
129	.num_resources	= ARRAY_SIZE(smc91x_resources),
130	.resource	= smc91x_resources,
131	.dev		= {
132		.platform_data = &xcep_smc91x_info,
133	},
134};
135
136
137static struct platform_device *devices[] __initdata = {
138	&flash_device,
139	&smc91x_device,
140};
141
142
143/* We have to state that there are HWMON devices on the I2C bus on XCEP.
144 * Drivers for HWMON verify capabilities of the adapter when loading and
145 * refuse to attach if the adapter doesn't support HWMON class of devices. */
146static struct i2c_pxa_platform_data xcep_i2c_platform_data  = {
147	.class = I2C_CLASS_HWMON
148};
149
150
151static mfp_cfg_t xcep_pin_config[] __initdata = {
152	GPIO79_nCS_3,	/* SMC 91C111 chip select. */
153	GPIO80_nCS_4,	/* CPLD chip select. */
154	/* SSP communication to MSP430 */
155	GPIO23_SSP1_SCLK,
156	GPIO24_SSP1_SFRM,
157	GPIO25_SSP1_TXD,
158	GPIO26_SSP1_RXD,
159	GPIO27_SSP1_EXTCLK
160};
161
162static void __init xcep_init(void)
163{
164	pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
165
166	pxa_set_ffuart_info(NULL);
167	pxa_set_btuart_info(NULL);
168	pxa_set_stuart_info(NULL);
169	pxa_set_hwuart_info(NULL);
170
171	/* See Intel XScale Developer's Guide for details */
172	/* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
173	__raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
174	/* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
175	__raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
176
177	platform_add_devices(ARRAY_AND_SIZE(devices));
178	pxa_set_i2c_info(&xcep_i2c_platform_data);
179}
180
181MACHINE_START(XCEP, "Iskratel XCEP")
182	.atag_offset	= 0x100,
183	.init_machine	= xcep_init,
184	.map_io		= pxa25x_map_io,
185	.nr_irqs	= PXA_NR_IRQS,
186	.init_irq	= pxa25x_init_irq,
187	.handle_irq	= pxa25x_handle_irq,
188	.init_time	= pxa_timer_init,
189	.restart	= pxa_restart,
190MACHINE_END
191